Though it will probably be shelved in the True Crime section, Disco Bloodbath is only ostensibly about ultrahip New York party promoter Michael Alig's 1996 co-murder and dismemberment of his drug dealer. The gruesome act and Alig's subsequent imprisonment bookends what is really more of a fascinating memoir by St. James, an Alig friend/foe and well-known gadfly on the city's predominately...